Try this in the data.ini by replacing the current entries.
[NoseGear]
SystemType=LANDING_GEAR
Retractable=TRUE
DeployTime=6.0
AnimationID=1
DragArea=0.25
HideGearNode=TRUE
ModelNodeName=gear_front_strut
InsideNodeName=bay_front
ShockNodeName=gear_front_piston
ShockAnimationID=6
ShockStroke=0.25
SpringFactor=2.5
DampingFactor=1.8
WheelNodeName001=nose_wheel_left
wheelNodeName002=nose_wheel_right
RollingRadius=0.22
CastoringWheel=TRUE
CastoringNodeName=
Steerable=TRUE
MaxSteeringSpeed=41.15
Locking=FALSE
MaxSteeringAngle=45.0
InputName=YAW_CONTROL
ControlRate=2.0
HasBrakes=FALSE
RollingCoefficient=0.05
MaxDeploySpeed=128.61
MaxLoadFactor=5.0
[LeftMainGear]
SystemType=LANDING_GEAR
Retractable=TRUE
DeployTime=6.0
AnimationID=1
DragArea=0.50
HideGearNode=TRUE
ModelNodeName=gear_strut_left
InsideNodeName=bay_left
ShockNodeName=gear_piston_left
//ShockTravelAxis=Z-AXIS
ShockAnimationID=7
ShockStroke=0.25
SpringFactor=1.5
DampingFactor=2.0
WheelNodeName=left_wheel
RollingRadius=0.360
CastoringWheel=FALSE
HasBrakes=TRUE
BrakingCoefficient=0.75
RollingCoefficient=0.05
MaxDeploySpeed=128.61
MaxLoadFactor=6.0
[RightMainGear]
SystemType=LANDING_GEAR
Retractable=TRUE
DeployTime=6.0
AnimationID=1
DragArea=0.50
HideGearNode=TRUE
ModelNodeName=gear_strut_right
InsideNodeName=bay_right
ShockNodeName=gear_piston_right
//ShockTravelAxis=Z-AXIS
ShockAnimationID=8
ShockStroke=0.25
SpringFactor=1.5
DampingFactor=2.0
ReverseWheelRotation=TRUE
WheelNodeName=right_wheel
RollingRadius=0.360
CastoringWheel=FALSE
HasBrakes=TRUE
BrakingCoefficient=0.75
RollingCoefficient=0.05
MaxDeploySpeed=128.61
MaxLoadFactor=6.0